DNS 记录将 www 重定向到非 www [英] DNS Records Redirect www to non-www
问题描述
I'm using Namecheap Domains and Vultr Hosting.
我正在尝试将 DNS www 重定向到非 www.
I'm trying to redirect DNS www to non-www.
www.example.com 到 example.com
www.example.com to example.com
我联系了 Vultr 并询问如何使用他们的 DNS 管理器执行此操作，他们说他们不会提供帮助，因为它是自我管理的.所以我联系了 Namecheap，他们说他们不会提供帮助，因为他们无法访问 Vultr 的 DNS 管理器，不会告诉我我向他们展示的记录是否正确，我需要联系 Vultr.所以我处于无休止的支持循环中.
I contacted Vultr and asked how to do this with their DNS Manager, they said they would not help as it is self-managed. So I contacted Namecheap, they said they would not help becuase they don't have access to Vultr's DNS Manager, would not tell me if the records I showed them are correct, and I would need to contact Vultr. So I am in an endless support loop.
Vultr DNS 管理器
我关注了这个答案，了解如何设置 CNAME 以重定向到非 www.
I followed this answer on how to set up a CNAME to redirect to non-www.
Type | Name | Data | Seconds
--------------------------------------
A | | ipv4 address | 300
AAAA | | ipv6 address | 300
CNAME | . | example.com | 300
CNAME | www | example.com | 300
等了一晚上才传播，www仍然可以访问，并且不会重定向.
After waiting all night for it to propgate, the www can still be visited and does not redirect.
它不允许我创建另一个 A 记录，只能创建 CNAME.它说:
It does not allow me to make another A record, only CNAME. It says:
Unable to add record: A CNAME record is not allowed to coexist with any other data.
<小时>
NGINX
我关注了本指南 并尝试使用站点可用配置重定向它.Http 和 Https 工作，但 www 不重定向到非 www.
I followed this guide and tried redirecting it with sites-available config. Http and Https work, but www does not redirect to non-www.
server {
# Redirect http to https
listen 80;
return 301 https://$host$request_uri;
}
server {
# Redirect www to non-www
server_name www.example.com;
return 301 $scheme://example.com$request_uri;
}
server {
listen 443 ssl default_server;
ssl on;
ssl_certificate /etc/nginx/ssl/cert_chain.crt;
ssl_certificate_key /etc/nginx/ssl/example_com.key;
ssl_protocols TLSv1.1 TLSv1.2;
server_name example.com;
...
推荐答案
DNS 无法将您的 www 站点重定向到非 www 站点.DNS 的唯一目的是使用 A、AAAA 或 CNAME 记录将 www 和非 www 指向您服务器的 IP 地址(它使差别不大).nginx 配置负责执行从 www 到非 www 的重定向.
DNS cannot redirect your www site to non-www. The only purpose of DNS is to point both www and non-www to your server's IP address using A, AAAA or CNAME records (it makes little difference). The nginx configuration is responsible for performing the redirect from www to non-www.
您的第二个服务器块旨在从 www 重定向到非 www，但目前仅处理 http 连接(在端口 80 上).
Your second server block is intended to redirect from www to non-www, but currently only handles http connections (on port 80).
您可以移动默认服务器并使用它来将所有内容重定向到预期的域名.例如:
You can move the default server and use that to redirect everything to the intended domain name. For example:
ssl_certificate /etc/nginx/ssl/cert_chain.crt;
ssl_certificate_key /etc/nginx/ssl/example_com.key;
server {
listen 80 default_server;
listen 443 ssl default_server;
return 301 https://example.com$request_uri;
}
server {
listen 443 ssl;
server_name example.com;
...
}
假设您拥有 www 和非 www 域名的通用证书，您可以将 ssl_ 指令移动到外部块中，并允许它们继承到两个服务器块中(如如上所示).
Assuming that you have a common certificate for both the www and non-www domain names, you can move the ssl_ directives into the outer block and allow them to be inherited into both server blocks (as shown above).
有关更多信息，请参阅本文档.
See this document for more.
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